Large-area groove type cable bridge and construction technology

Abstract

The invention discloses a large-area groove type cable bridge and a construction technology, and relates to the field of cable bridges, the large-area groove type cable bridge comprises a cable groove, the right end of the cable groove is provided with a slide rail, and the upper end of the slide rail is provided with a guide member and a pulley member; the pulley piece comprises a sliding seat which is movably arranged, a driving wheel and a driven wheel are rotationally arranged at the upper end of the sliding seat, and the upper end of the driving wheel is meshed with the driven wheel which can be lifted; the guiding part comprises a first roller and second rollers, the first roller and the second rollers are located on the right side of the driving wheel, the two ends of the first roller are vertically and rotatably provided with the second rollers, and a hanging bracket is fixed to the lower end of the cable groove. The cable is clamped between the driving wheel and the driven wheel in the pulley piece, when the driving wheel rotates, the cable can be automatically conveyed, the cable conveying efficiency is improved, the manual conveying link is omitted, the cable conveying difficulty is reduced, and convenience is brought to use.

Description

Technical Field

[0001] The invention relates to the field of cable bridges, and in particular to a large-area trough-type cable bridge and a construction process. Background Art

[0002] Cable tray is a rigid structural system used to support, protect and manage cables. The main structure is composed of trough-type, tray-type or ladder-type straight sections, bends, tees, and cross-section components; it also includes supporting components, mainly brackets (arm-type brackets), hangers, etc., which are used to fix the cable tray to buildings or other structures; the cable tray provides stable support for the cables, allowing them to hang in the air to avoid contact with the ground or other objects, and to prevent the cables from mechanical damage, moisture erosion, and chemical corrosion, etc.; at the same time, it is convenient for cable management, so that the cables are arranged neatly, easy to identify, easy to maintain and troubleshoot, and improve the efficiency of the electrical system. It can also save space, and the cables can be lifted from the wall or the ground. In places where space is limited or the layout of the electrical lines needs to be changed frequently, it can save space and provide wiring flexibility; in addition, it can adapt to a variety of environments, such as indoor, outdoor, humid, corrosive and other different environmental conditions; it is widely used in various buildings such as office buildings, factories, hospitals, schools, shopping malls, as well as industrial fields such as petrochemicals, metallurgy, electricity, and communications;

[0003] For example, the prior art application number CN202020592889.8 relates to a grid-type cable bridge, comprising a U-shaped support rod, an upper cylindrical support rod, a lower cylindrical support rod, a cylindrical plug rod and a plug-in unit; the middle parts of a plurality of the U-shaped support rods arranged side by side are fixedly connected by a plurality of the cylindrical plug rods arranged side by side; the two ends of the plurality of the U-shaped support rods are respectively fixedly connected to an upper cylindrical support rod and a lower cylindrical support rod; the two lower cylindrical support rods are located at the lower parts of the two upper cylindrical support rods; one end of the two upper cylindrical support rods is provided with a plug-in groove, and the other end of the two upper cylindrical support rods is provided with a plug-in unit plugged with the plug-in groove;

[0004] Through actual use, it is known that the above-mentioned prior art requires manual dragging when placing the cables in the appropriate position in the bridge. For longer and heavier cables, the operation is very inconvenient, resulting in difficulty in cable laying and low efficiency. For this reason, we have improved the above-mentioned prior art based on actual usage. Summary of the invention

[0005] The main purpose of the present invention is to provide a large-area trough-type cable bridge and a construction process, which can effectively solve the problems in the background technology.

[0006] A large-area trough-type cable bridge comprises a cable trough, a slide rail is arranged at the right end of the cable trough, and a guide member and a pulley member are arranged at the upper end of the slide rail; the pulley member comprises a movably arranged slide seat, a driving wheel and a driven wheel are rotatably arranged at the upper end of the slide seat, and the upper end of the driving wheel is engaged with and can be raised and lowered to the driven wheel; the guide member comprises a No. 1 roller and a No. 2 roller, the No. 1 roller and the No. 2 roller are both located on the right side of the driving wheel, and both ends of the No. 1 roller are upright and the No. 2 roller is rotatably arranged.

[0007] Preferably, a hanger is fixed to the lower end of the cable trough, and a pressure block is fixed to the bottom wall of the hanger by bolts for fixing the cable trough. A hanger is integrally provided at the upper end of the hanger, and a fixing block is fixed to the upper end of the hanger for fixing to the top wall. A connecting tube is provided on the outer thread of the hanger and the upper end of the connecting tube surrounds the bottom of the fixing block.

[0008] Preferably, a cylinder is rotatably provided at the left end of the cable groove through a bracket, and at least four guide grooves are equidistantly provided on the periphery of the cylinder.

[0009] Preferably, a slide seat is slidably arranged at the upper end of the slide rail, a locking screw is arranged on the right internal thread of the slide seat, and one end of the locking screw is pressed against the outer surface of the slide rail to lock the moving position of the slide seat.

[0010] Preferably, a stand is integrally provided at the upper end of the locking slide, and a driving wheel and a driven wheel are rotatably provided on the rear side of the stand; a servo motor is fixed to the upper surface of the slide via a bracket, a No. 1 gear is fixed to the output end of the servo motor, a No. 2 gear is rotatably installed on the front side of the stand via a connecting shaft, and one end of the connecting shaft passes through the stand and is fixed to the front side of the driving wheel via a flange, and the No. 1 gear is meshed with the No. 2 gear to drive the driving wheel to rotate.

[0011] Preferably, a slide groove is opened in the vertical frame and a slider is slidably arranged in the slide groove, and the rear side of the slider is rotatably installed with a driven wheel through a connecting shaft; a mounting plate is welded on the front side of the vertical frame and a lifting screw is rotatably arranged in the mounting plate through a bearing, and the lifting screw and the slider thread are arranged to drive the slider to control the lifting and lowering of the driven wheel.

[0012] Preferably, a portion of the lower end of the driven wheel surrounds the upper end of the driving wheel, a rubber block is fixed to the outer surface of the driving wheel by rivets, and a plurality of the rubber blocks are arranged in a ring shape with the center of the driving wheel.

[0013] Preferably, a mounting frame is integrally provided on the right side of the vertical frame, a pin rod is fixed to the inner side of the mounting frame by bolts, and the outer periphery of the pin rod is rotatably mounted on the No. 1 roller through a bearing; two planes are provided on the upper surface of the pin rod near the two ends of the No. 1 roller and the upper surfaces of the planes are rotatably mounted on the No. 2 roller through a connecting shaft.

[0014] Preferably, the front and rear sides of the driving wheel are integrally provided with arc-shaped blades in an annular shape.

[0015] A construction process for a large-area trough-type cable bridge, which is applied to a large-area trough-type cable bridge, comprises the following steps:

[0016] S1. Installation preparation: The device is fixed to the top wall of the building through a hanger, a hanger rod, a fixing block and a pressing block and a cable trough, so that the device is fixedly connected to the top wall of the building, so that the device is hoisted;

[0017] S2, conveying adjustment, twist the lifting screw in the pulley to flexibly lift and lower the driven wheel, flexibly change the distance between the driven wheel and the driving wheel, and then make the cable pass between the driving wheel and the driven wheel, while the cable is on the upper surface of the No. 1 roller in the guide. Twist the lifting screw again to move the driven wheel down to apply pressure on the upper surface of the cable, so that the cable is clamped between the driving wheel and the driven wheel, and finally start the servo motor to drive the No. 1 gear and the No. 2 gear to rotate, so that the driving wheel rotates to automatically convey the cable;

[0018] S3. Determine the conveying accuracy. Before conveying the cable, the locking screw can be turned to prevent it from being locked against the slide rail. At this time, the slide can be moved flexibly back and forth. When the slide moves flexibly back and forth, the driving wheel and the driven wheel will be driven to move flexibly back and forth. After determining the position, the slide rail is locked again by the locking screw.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The cable is clamped between the driving wheel and the driven wheel in the pulley. When the driving wheel rotates, the cable can be automatically transported, which increases the efficiency of cable transportation and eliminates the manual transportation link, thereby reducing the difficulty of cable transportation and bringing convenience to use;

[0021] 2. When the lifting screw in the pulley is turned clockwise, the slider will drive the driven wheel to move down, and the distance between the driven wheel and the driving wheel will become smaller; when the lifting screw is turned counterclockwise, the driven wheel will move up, and the distance between the driven wheel and the driving wheel will increase, so that the distance between the driving wheel and the driven wheel can be flexibly changed, the adaptability to the cable is increased, and cables with different diameters can be transported;

[0022] 3. Before the cable is transported, the locking screw in the pulley can be turned to prevent it from being locked against the slide rail. At this time, the slide seat can be flexibly moved forward and backward. When the slide seat moves forward and backward, the active wheel and the driven wheel will be driven to move forward and backward flexibly. After the position is determined, the slide rail is locked again by the locking screw, which can facilitate the active guidance of the cable to a specific position in the cable groove and improve the accuracy of the cable layout;

[0023] 4. When the cable is on the upper surface of the No. 1 roller in the guide member during the conveying process of the pulley, the cable is also between the two upright No. 2 rollers. In this way, the outer surface of the cable will always maintain rolling connection with the No. 1 roller and the No. 2 roller during the conveying process. During the laying process, the probability of friction between the cable and the edge of the cable trough, the internal structure, etc. is reduced, and the cable can be positioned to prevent excessive bending, thereby avoiding wear on the cable surface and increasing the service life and performance of the cable;

[0024] 5. At the same time, when the cable is positioned on the upper surface of the No. 1 roller in the guide part during the conveying process, the driving wheel in the pulley part will drive the arc-shaped fan blades on the front and rear sides to rotate and generate wind blowing to the right. The wind blowing to the right will directly blow on the outer surface of the cable, blowing off the dust on the surface of the cable, thereby cleaning the dust on the surface of the cable and avoiding long-term accumulation of dust that may affect the heat dissipation, insulation and other properties of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 Shown is a top view schematic diagram of the present invention.

[0027] Figure 3 Shown is a right side schematic diagram of the present invention.

[0028] Figure 4 The present invention is shown Figure 1 Partial schematic diagram.

[0029] Figure 5 Shown is a schematic diagram of a pulley member of the present invention.

[0030] Figure 6 Shown is a schematic diagram of a guide member of the present invention.

[0031] Figure 7 Shown is a schematic diagram of the hanger and its upper end connection structure of the present invention;

[0032] Figure 8 The present invention is shown Figure 3 Enlarged schematic diagram at point a in the middle.

[0033] Fig. 9 Shown is a schematic diagram of a cylinder of the present invention.

[0034] Main component symbols

[0035] 1. Cable trough; 2. Slide rail; 3. Guide; 31. Mounting frame; 32. Pin rod; 33. Roller No. 1; 34. Roller No. 2; 4. Pulley; 41. Slide seat; 42. Stand; 43. Driving wheel; 44. Driven wheel; 45. Arc-shaped fan blade; 46. Locking screw; 47. Rubber block; 48. Servo motor; 49. Gear No. 1; 410. Gear No. 2; 411. Slide; 412. Sliding block; 413. Mounting plate; 414. Lifting screw; 5. Hanger; 51. Hanging rod; 52. Fixing block; 53. Connecting cylinder; 54. Pressing block; 6. Cylinder; 61. Guide trough; 7. Cable.

[0036] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] The present embodiment provides a large-area trough-type cable bridge, including a cable trough 1, a slide rail 2 is provided at the right end of the cable trough 1, and a guide member 3 and a pulley member 4 are provided at the upper end of the slide rail 2; the pulley member 4 includes a movably arranged slide seat 41, which cooperates with the slide rail 2 to change the front and rear positions of the guide member 3 and the pulley member 4, and a driving wheel 43 and a driven wheel 44 are rotatably provided at the upper end of the slide seat 41, and the upper end of the driving wheel 43 is engaged and the driven wheel 44 can be raised and lowered; the guide member 3 includes a No. 1 roller 33 and a No. 2 roller 34, both of which are located on the right side of the driving wheel 43, and both ends of the No. 1 roller 33 are erected and rotatably arranged, and the No. 2 roller 34 is used to reduce the wear on the cable 7.

[0040] refer to Figure 3 and Figure 7 A hanger 5 is fixed to the lower end of the cable trough 1, and a pressure block 54 is fixed to the bottom wall of the hanger 5 by bolts for fixing the cable trough 1. A hanger 51 is integrally provided at the upper end of the hanger 5, and a fixing block 52 is fixed to the upper end of the hanger 51 for fixing to the top wall. A connecting tube 53 is provided on the outer thread of the hanger 51, and the upper end of the connecting tube 53 surrounds the bottom of the fixing block 52 for shielding and beauty while preventing dust from falling at the drilling hole on the wall.

[0041] refer to Figure 1 and Fig. 9The left end of the cable trough 1 is provided with a cylinder 6 which is rotatably mounted by a bracket, and at least four guide grooves 61 are equidistantly arranged on the periphery of the cylinder 6. During the transportation of the cable 7, it will be on the surface of the guide groove 61; the guide groove 61 can ensure that the cable 7 moves along the set route, so that the cable 7 is neatly arranged in the cable trough 1, and avoids the cable 7 from being offset or entangled during the movement; at the same time, it provides a stable support point for the cable 7, especially during the transportation of the cable 7, which can reduce the shaking and wear of the cable 7, and ensure that the transportation process of the cable 7 is more stable;

[0042] refer to Figure 5 , a slide 41 is slidably arranged at the upper end of the slide rail 2, a locking screw 46 is arranged on the right internal thread of the slide 41, and one end of the locking screw 46 is pressed against the outer surface of the slide rail 2 to lock the moving position of the slide 41. A stand 42 is integrally arranged at the upper end of the locking slide 41, and a driving wheel 43 and a driven wheel 44 are rotatably arranged at the rear side of the stand 42; a servo motor 48 and a switch are fixed to the upper surface of the slide 41 through a bracket to control the servo motor 48, and a No. 1 gear 49 is fixed to the output end of the servo motor 48, and a No. 2 gear 410 is rotatably installed at the front side of the stand 42 through a connecting shaft, and one end of the connecting shaft passes through the stand 42 and is fixed to the front side of the driving wheel 43 through a flange, and it should be noted that the connecting shaft and the stand 42 are rotatably installed but not movable through a bearing, and the No. 1 gear 49 is meshed with the No. 2 gear 410 to drive the driving wheel 43 to rotate.

[0043] refer to Figure 5 A slide groove 411 is opened in the vertical frame 42, and a slider 412 is slidably arranged in the slide groove 411. The rear side of the slider 412 is rotatably installed with the driven wheel 44 through a connecting shaft; a mounting plate 413 is welded on the front side of the vertical frame 42, and a lifting screw 414 is rotatably arranged in the mounting plate 413 through a bearing. The lifting screw 414 and the slider 412 are threadedly arranged to drive the slider 412 to control the lifting and lowering of the driven wheel 44. The maximum lifting height of the driven wheel 44 is 5 cm.

[0044] refer to Figure 5 A portion of the lower end of the driven wheel 44 surrounds the upper end of the driving wheel 43. A rubber block 47 is fixed to the outer surface of the driving wheel 43 by rivets. Several rubber blocks 47 are arranged in a ring shape around the center of the driving wheel 43 to increase the friction with the outer surface of the cable 7 to prevent the cable 7 from sliding during the transportation process.

[0045] refer to Figure 5 , Figure 6 , Figure 8The right side of the stand 42 is integrally provided with a mounting frame 31, the inner side of the mounting frame 31 is fixed with a pin rod 32 by bolts, and the outer periphery of the pin rod 32 is rotatably mounted with a first roller 33 through a bearing; the upper surface of the pin rod 32 near the two ends of the first roller 33 is provided with two planes, and the upper surfaces of the planes are rotatably mounted with a second roller 34 through a connecting shaft. The front and rear sides of the driving wheel 43 are integrally provided with arc-shaped fan blades 45 for generating wind blowing to the right.

[0046] Example 2

[0047] This embodiment provides a construction process for a large-area trough-type cable tray, which is applied as in claim embodiment 1 and includes the following steps:

[0048] S1, installation preparation, the device is fixed to the cable trough 1 through the hanger 5, the hanger rod 51, the fixing block 52 and the pressing block 54 so that it is fixedly connected to the top wall of the building, so that the device is hoisted;

[0049] S2, conveying adjustment, twisting the lifting screw 414 in the pulley member 4 to flexibly lift and lower the driven wheel 44, flexibly changing the distance between the driven wheel 44 and the driving wheel 43, and then passing the cable 7 between the driving wheel 43 and the driven wheel 44, while the cable 7 is on the upper surface of the No. 1 roller 33 in the guide member 3. Twisting the lifting screw 414 again to move the driven wheel 44 downward to apply pressure to the upper surface of the cable 7, so that the cable 7 is clamped between the driving wheel 43 and the driven wheel 44, and finally starting the servo motor 48 to drive the No. 1 gear 49 and the No. 2 gear 410 to rotate so that the driving wheel 43 rotates to automatically convey the cable;

[0050] S3. Determine the conveying accuracy. Before conveying the cable 7, the locking screw 46 can be turned to prevent it from being locked against the slide rail 2. At this time, the slide seat 41 can be flexibly moved back and forth. When the slide seat 41 moves back and forth flexibly, the driving wheel 43 and the driven wheel 44 will be driven to move back and forth flexibly. After determining the position, the slide rail 2 is locked again by the locking screw 46.

[0051] Working principle: Before using the device, first fix the cable trough 1 with the hanger 5, the hanger rod 51, the fixing block 52 and the pressing block 54 so that it is fixedly connected to the top wall of the building, so that the device can be hoisted;

[0052] Then, the lifting screw 414 in the pulley member 4 is turned to flexibly lift and lower the driven wheel 44, flexibly changing the distance between the driven wheel 44 and the driving wheel 43, and then the cable 7 passes between the driving wheel 43 and the driven wheel 44, while the cable 7 is on the upper surface of the No. 1 roller 33 in the guide member 3. The lifting screw 414 is turned again to move the driven wheel 44 downward to apply pressure to the upper surface of the cable 7, so that the cable 7 is clamped between the driving wheel 43 and the driven wheel 44, and finally the servo motor 48 is started to drive the No. 1 gear 49 and the No. 2 gear 410 to rotate so that the driving wheel 43 rotates to automatically transport the cable; this can increase the efficiency of cable transportation and eliminate the manual transportation link, thereby reducing the difficulty of cable transportation, bringing convenience to use, and can be operated over a large area;

[0053] When the lifting screw 414 is turned clockwise, the slider 412 drives the driven wheel 44 to move downward, and the distance between the driven wheel 44 and the driving wheel 43 becomes smaller; when the lifting screw 414 is rotated counterclockwise, the driven wheel 44 moves upward, and the distance between the driven wheel 44 and the driving wheel 43 becomes larger, so that the distance between the driving wheel 43 and the driven wheel 44 can be flexibly changed, and the adaptability to the cable is increased, and cables 7 with different diameters can be transported;

[0054] Before the cable 7 is transported, the locking screw 46 can be screwed so that it is not locked against the slide rail 2. At this time, the slide seat 41 can be flexibly moved forward and backward. When the slide seat 41 is flexibly moved forward and backward, the active wheel 43 and the driven wheel 44 are driven to move forward and backward accordingly. After the position is determined, the slide rail 2 is locked again by the locking screw 46, which can facilitate active guidance of the cable 7 to a specific position in the cable groove 1, thereby improving the accuracy of the layout of the cable 7.

[0055] In addition, a portion of the lower end of the driven wheel 44 surrounds the upper end of the driving wheel 43, which can prevent the cable 7 from derailing between the driving wheel 43 and the driven wheel 44 during the conveying process, thereby improving the stability of the cable 7 conveying;

[0056] When the cable 7 is on the upper surface of the No. 1 roller 33 in the guide member 3 during the conveying process, the cable 7 is also between the two upright No. 2 rollers 34. Thus, during the conveying process of the cable 7, the outer surface of the cable 7 will always maintain rolling connection with the No. 1 roller 33 and the No. 2 roller 34. During the laying process, the probability of friction between the cable 7 and the edge and internal structure of the cable trough 1 is reduced, and the cable 7 can be positioned to prevent excessive bending, thereby avoiding wear on the surface of the cable 7 and increasing the service life and performance of the cable 7.

[0057] At the same time, when the cable 7 is positioned on the upper surface of the No. 1 roller 33 in the guide member 3 during the conveying process, the driving wheel 43 will drive the arc-shaped fan blades 45 on its front and rear sides to rotate to generate wind blowing to the right. The wind blowing to the right will directly blow on the outer surface of the cable 7, blowing off the dust on the surface of the cable 7, thereby cleaning the dust on the surface of the cable 7 and avoiding long-term accumulation of dust that may affect the heat dissipation, insulation and other properties of the cable.

[0058] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A large-area trough-type cable bridge, comprising a cable trough (1), characterized in that: A slide rail (2) is provided at the right end of the cable trough (1), and a guide member (3) and a pulley member (4) are provided at the upper end of the slide rail (2); The pulley member (4) comprises a movably arranged slide seat (41), the upper end of which is rotatably provided with a driving wheel (43) and a driven wheel (44), and the upper end of which is meshed with and liftable with the driven wheel (44); The guide member (3) comprises a first roller (33) and a second roller (34), wherein the first roller (33) and the second roller (34) are both located on the right side of the driving wheel (43), and the second roller (34) is vertically and rotatably arranged at both ends of the first roller (33).

2. A large-area trough-type cable tray according to claim 1, characterized in that: A hanger (5) is fixed at the lower end of the cable trough (1); a pressure block (54) is fixed to the bottom wall of the hanger (5) by bolts for fixing the cable trough (1); a hanger rod (51) is integrally provided at the upper end of the hanger (5); a fixing block (52) is fixed to the upper end of the hanger rod (51) for fixing to the top wall; a connecting tube (53) is provided on the outer periphery of the hanger rod (51) in a threaded manner, and the upper end of the connecting tube (53) surrounds the bottom of the fixing block (52).

3. A large-area trough-type cable tray according to claim 2, characterized in that: A cylinder (6) is rotatably arranged at the left end of the cable trough (1) via a bracket, and at least four guide grooves (61) are equidistantly arranged on the periphery of the cylinder (6).

4. A large-area trough-type cable tray according to claim 1, characterized in that: A slide seat (41) is slidably arranged on the upper end of the slide rail (2); a locking screw (46) is arranged on the right internal thread of the slide seat (41); and one end of the locking screw (46) is pressed against the outer surface of the slide rail (2) to lock the moving position of the slide seat (41).

5. A large-area trough-type cable tray according to claim 4, characterized in that: The upper end of the locking slide (41) is integrally provided with a stand (42), and a driving wheel (43) and a driven wheel (44) are rotatably provided at the rear side of the stand (42); A servo motor (48) is fixed to the upper surface of the slide seat (41) through a bracket, and a first gear (49) is fixed to the output end of the servo motor (48). A second gear (410) is rotatably mounted on the front side of the stand (42) through a connecting shaft, and one end of the connecting shaft passes through the stand (42) and is fixed to the front side of the driving wheel (43) through a flange. The first gear (49) is meshed with the second gear (410) to drive the driving wheel (43) to rotate.

6. A large-area trough-type cable tray according to claim 5, characterized in that: A slide groove (411) is provided in the stand (42), and a slider (412) is slidably provided in the slide groove (411), and a driven wheel (44) is rotatably mounted on the rear side of the slider (412) via a connecting shaft; A mounting plate (413) is welded to the front side of the stand (42), and a lifting screw (414) is rotatably arranged in the mounting plate (413) via a bearing. The lifting screw (414) and the slider (412) are threadedly arranged to drive the slider (412) to control the lifting of the driven wheel (44).

7. A large-area trough-type cable tray according to claim 6, characterized in that: A portion of the lower end of the driven wheel (44) surrounds the upper end of the driving wheel (43), and a rubber block (47) is fixed to the outer surface of the driving wheel (43) by rivets. A plurality of the rubber blocks (47) are arranged in a ring shape with the center of the driving wheel (43).

8. The large-area trough-type cable tray according to claim 6, characterized in that: A mounting frame (31) is integrally provided on the right side of the vertical frame (42), a pin rod (32) is fixed to the inner side of the mounting frame (31) by bolts, and a first roller (33) is rotatably mounted on the outer periphery of the pin rod (32) by a bearing; The upper surface of the pin rod (32) near the two ends of the first roller (33) is provided with two planes, and the upper surfaces of the planes are rotatably mounted on the second roller (34) via a connecting shaft.

9. The large-area trough-type cable tray according to claim 1, characterized in that: The front and rear sides of the driving wheel (43) are integrally provided with arc-shaped fan blades (45) in an annular shape.

10. A construction process for a large-area trough-type cable tray, which is applied to a large-area trough-type cable tray according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, installation preparation, that is, fixing the device to the cable trough (1) through the hanger (5), the hanger rod (51), the fixing block (52) and the pressing block (54) so ​​that the device is fixedly connected to the top wall of the building, so that the device is hoisted; S2, conveying adjustment, twisting the lifting screw 414 in the pulley member (4) to flexibly lift and lower the driven wheel (44), flexibly changing the distance between the driven wheel (44) and the driving wheel (43), and then passing the cable (7) between the driving wheel (43) and the driven wheel (44), while the cable (7) is on the upper surface of the No. 1 roller (33) in the guide member (3). Twisting the lifting screw (414) again to move the driven wheel (44) downward to apply pressure to the upper surface of the cable (7), so that the cable (7) is clamped between the driving wheel (43) and the driven wheel (44), and finally starting the servo motor (48) to drive the No. 1 gear (49) and the No. 2 gear (410) to rotate so that the driving wheel (43) rotates to automatically convey the cable; S3, determine the conveying accuracy. Before the cable (7) is conveyed, the locking screw (46) can be turned so that it is not locked against the slide rail (2). At this time, the slide seat (41) can be flexibly moved forward and backward. When the slide seat (41) is flexibly moved forward and backward, the driving wheel (43) and the driven wheel (44) are driven to move forward and backward accordingly. After the position is determined, the slide rail (2) is locked again by the locking screw (46).

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